【摘要】 有机气溶胶具有荧光效应，能在特定波长激光的激发下产生荧光，针对此类荧光气溶胶团，提出了一种基于水平探测荧光-米激光雷达的径向边界检测算法。该算法利用荧光和米双通道的回波信号构造一个去除大气影响的函数，并采用截距法检测荧光气溶胶团的突变特征信号以确定边界。数值仿真表明，该算法在不同能见度和信噪比下对单个和两个荧光气溶胶团的径向边界检测都具有较高的精确度和稳定性。利用该算法检测了荧光-米激光雷达对单个或两个荧光气溶胶团的径向边界，结果表明该算法有效提高了边界检测的准确度和稳定性，且具有检测单个荧光气溶胶团边界的时效性。更多还原

【Abstract】 Organic aerosols exhibit a fluorescence effect, generating fluorescence when excited by laser at specific wavelengths. For such fluorescent aerosol clusters, a radial boundary detection algorithm based on horizontal detection fluorescence-Mie lidar is proposed. The algorithm employs echo signals from both fluorescence and Mie dual channels to create a function that eliminates atmospheric effects. Subsequently, adopting the intercept method to detect sudden changes of characteristic signals of fluorescent aerosol clusters, their boundaries can be determined. Numerical simulations demonstrate that the algorithm offers high accuracy and stability in detecting radial boundary for both single and double fluorescent aerosol clusters, regardless of visibility and signal-to-noise ratios. By utilizing this algorithm to detect the radial boundaries of single or double fluorescence aerosol clusters with fluorescence-Mie lidar, the accuracy and stability of boundary detection are significantly improved. Additionally, the algorithm is capable of timely detection of boundaries for single fluorescent aerosol clusters.更多还原